Do we have to leave our Zcash under a shielded or transparent address? Or would it not matter? Sorry I know its early just trying to get a head start on all of this.

(Note: To ensure that you get your Ycash, you must possess your Zcash private keys.) <----not sure what this means. Will I be receiving my Ycash if I keep my Zcash in my Ledger Nano? If not where would I move them. Can someone elaborate?